# Fillit

## To do

- [x] Check if we have a file
- [x] Read file
- [ ] Check if there are errors in file
  - 4 char * 4 lines
  - 4 blocks in 1 tetrimino
  - No solo block
- [ ] Transform file into tetriminos
- [ ] Check if every tetrimino is valid
- [ ] Backtracking for smallest square
- [ ] Transform tetriminos to letters
- [ ] Print result

- [ ] Optimisation